Women's Earth174; FEY Peep Toe Sandals Negative Heel Technology positions toes at a 3.7 degree incline to improve posture and burn fat. Slip-resistant latex and EVA outsole absorbs shock for a softer step. Anatomically correct BioFoam insole offers comfortable, supportive cushioning. Leather upper, polyurethane upper lining, leather sockliner, BioFoam cushioning insole... Latex and EVA outsole. Care: Buff with a leather cleaner or polish. Wipe off with a dry cloth.